2185818402200 has 48 divisors (see below), whose sum is σ = 5349502941000. Its totient is φ = 828310129920.

The previous prime is 2185818402133. The next prime is 2185818402203. The reversal of 2185818402200 is 22048185812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185818402203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287603885 + ... + 287611484.

Almost surely, 2^{2185818402200} is an apocalyptic number.

2185818402200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2185818402200 is an abundant number, since it is smaller than the sum of its proper divisors (3163684538800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2185818402200 is a wasteful number, since it uses less digits than its factorization.

2185818402200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575215404 (or 575215395 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 41.

The spelling of 2185818402200 in words is "two trillion, one hundred eighty-five billion, eight hundred eighteen million, four hundred two thousand, two hundred".